Leave.EU supporters wave Union flags and cheer as the results come in at the Leave.EU referendum party at Millbank Tower in central London early in the morning of June 24, 2016.
First results from Britain's knife-edge referendum showed unexpectedly strong support for leaving the European Union on Friday, sending the pound plummeting as investors feared a historic blow against the 28-nation alliance. / AFP PHOTO / GEOFF CADDICK (Photo credit should read GEOFF CADDICK/AFP/Getty Images)

Leader of the United Kingdom Independence Party (UKIP), Nigel Farage reacts at the Leave.EU referendum party at Millbank Tower in central London on June 24, 2016, as results indicate that it looks likely the UK will leave the European Union (EU).
Top anti-EU campaigner Nigel Farage said he was increasingly confident of victory in Britain's EU referendum on Friday, voicing hope that the result 'brings down' the European Union. / AFP PHOTO / GEOFF CADDICK (Photo credit should read GEOFF CADDICK/AFP/Getty Images)

A man carrying an anti-EU pro-Brexit placard shouts in a counter protest against pro-Europe marchers on a March for Europe demonstration against the Brexit vote in Parliament Square in central London on September 3, 2016.
Thousands marched in central London to Parliament Square in a pro-Europe rally against the referendum vote to leave the European Union. / AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)

LONDON, ENGLAND - JULY 18: A 'Vote LEAVE' battle bus is parked outside the Houses of Parliament in Westminster by the environmental campaign group Greenpeace before being re-branded on July 18, 2016 in London, England. The bus which was used during the European Union (EU) referendum campaign and had the statement 'We send the EU £350 million a week let's fund our NHS instead' along the side was today covered with thousands of questions for the new Prime Minister Theresa May and her government about what a 'Brexit' might mean for the environment. (Photo by Jack Taylor/Getty Images)